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参数资料
| 型号： | MC54F148J |
| 厂商： | MOTOROLA INC |
| 元件分类： | 算术逻辑单元 |
| 英文描述： | 8-LINE TO 3-LINE PRIORITY ENCODER FAST SHOTTKY TTL |
| 中文描述： | F/FAST SERIES, 8-BIT ENCODER, CDIP16 |
| 封装： | CERAMIC, DIP-16 |
| 文件页数： | 3/3页 |
| 文件大小： | 87K |
| 代理商： | MC54F148J |
4-61
FAST AND LS TTL DATA
MC54/74F148
DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified)
Limits
Symbol
Parameter
Min
Typ
Max
Unit
Test Conditions
VIH
Input HIGH Voltage
2.0
V
Guaranteed Input HIGH Voltage
VIL
Input LOW Voltage
0.8
V
Guaranteed Input LOW Voltage
VIK
Input Clamp Diode Voltage
–1.2
V
IIN = –18 mA
VCC = MIN
VOH
Output HIGH Voltage
54, 74
2.5
3.4
V
IOH = –1.0 mA
VCC = 4.50 V
74
2.7
3.4
V
IOH = –1.0 mA
VCC = 4.75 V
VOL
Output LOW Voltage
0.35
0.5
V
IOL = 20 mA
VCC = MIN
IIH
Input HIGH Current
20
A
VCC = MAX, VIN = 2.7 V
100
A
VCC = MAX, VIN = 7.0 V
IIL
I0, E1
–0.6
mA
VCC = MAX, VIN = 0.5 V
IIL
I1–I7
–1.2
mA
VCC = MAX, VIN = 0.5 V
IOS
Output Short Circuit Current (Note 2)
-60
–150
mA
VCC = MAX, VOUT = 0 V
ICC
Power Supply Current
23
35
mA
VCC = MAX, VIN = 4.5 V
NOTES:
1. For conditions shown as MIN or MAX, use the appropriate value specified under guaranteed operating ranges.
2. Not more than one output should be shorted at a time, nor for more than 1 second.
AC CHARACTERISTICS
54/74F
54F
74F
TA = +25°C
VCC = +5.0 V
CL = 50 pF
TA = –55°C to +125°C
VCC = 5.0 V ± 10%
CL = 50 pF
TA = 0°C to 70°C
VCC = 5.0 V ± 10%
CL = 50 pF
Symbol
Parameter
Min
Typ
Max
Min
Max
Min
Max
Unit
tPLH
Propagation Delay
3.5
7.0
9.0
3.5
11
3.5
10
ns
tPHL
In to An
4.0
8.0
10.5
4.0
13
4.0
12
ns
tPLH
Propagation Delay
2.5
5.0
6.5
2.5
8.5
2.5
7.5
ns
tPHL
In to EO
2.0
5.5
7.5
2.0
9.5
2.0
8.5
ns
tPLH
Propagation Delay
3.0
7.0
9.0
3.0
11
3.0
10
ns
tPHL
In to GS
2.0
6.0
8.0
2.0
10
2.0
9.0
ns
tPLH
Propagation Delay
3.5
6.5
8.5
3.5
10.5
3.5
9.5
ns
tPHL
E1 to An
3.0
6.0
8.0
3.0
10
3.0
9.0
ns
tPLH
Propagation Delay
2.5
5.0
7.0
2.5
9.0
2.5
8.0
ns
tPHL
E1 to GS
3.0
6.0
7.5
3.0
10
3.0
8.5
ns
tPLH
Propagation Delay
3.0
5.5
7.0
3.0
9.0
3.0
8.0
ns
tPHL
E1 to EO
4.5
8.0
10.5
4.5
13
4.5
12
ns
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